How does God's Spirit work in us today?

⁶⁰Many therefore of his disciples, when they had heard this, said, This is an hard saying; who can hear it? ⁶¹When Jesus knew in himself that his disciples murmured at it, he said unto them, Doth this offend you? ⁶²What and if ye shall see the Son of man ascend up where he was before? ⁶³It is the spirit that quickeneth; the flesh profiteth nothing: the words that I speak unto you, they are spirit, and they are life.

¹⁴For this cause I bow my knees unto the Father of our Lord Jesus Christ, ¹⁵Of whom the whole family in heaven and earth is named, ¹⁶That he would grant you, according to the riches of his glory, to be strengthened with might by his Spirit in the inner man; ¹⁷That Christ may dwell in your hearts by faith; that ye, being rooted and grounded in love, ¹⁸May be able to comprehend with all saints what is the breadth, and length, and depth, and height; ¹⁹And to know the love of Christ, which passeth knowledge, that ye might be filled with all the fulness of God. ²⁰Now unto him that is able to do exceeding abundantly above all that we ask or think, according to the power that worketh in us, ²¹Unto him be glory in the church by Christ Jesus throughout all ages, world without end. Amen.

¹⁶This I say then, Walk in the Spirit, and ye shall not fulfil the lust of the flesh. ¹⁷For the flesh lusteth against the Spirit, and the Spirit against the flesh: and these are contrary the one to the other: so that ye cannot do the things that ye would. ¹⁸But if ye be led of the Spirit, ye are not under the law. ¹⁹Now the works of the flesh are manifest, which are these; Adultery, fornication, uncleanness, lasciviousness, ²⁰Idolatry, witchcraft, hatred, variance, emulations, wrath, strife, seditions, heresies, ²¹Envyings, murders, drunkenness, revellings, and such like: of the which I tell you before, as I have also told you in time past, that they which do such things shall not inherit the kingdom of God. ²²But the fruit of the Spirit is love, joy, peace, longsuffering, gentleness, goodness, faith, ²³Meekness, temperance: against such there is no law. ²⁴And they that are Christ’s have crucified the flesh with the affections and lusts. ²⁵If we live in the Spirit, let us also walk in the Spirit.